Maine Standards Company, Cumberland Foreside, Maine, offers the Validate HbA1c calibration verification and linearity test kit, which evaluates the percentage of glycohemoglobin A1c in a human whole-blood base matrix. Prepared using the “equal delta” method recommended for linearity testing by the Clinical and Laboratory Standards Institute, the kit contains five levels of liquid, ready-to-use linearity testing material. Lab professionals can simply add the product from the dropper bottle directly into a sample cup and run as a patient sample in duplicate or triplicate. The product enables clinical laboratories to complete their required HbA1c calibration verification and linearity testing and maximize the reportable range while minimizing manual dilutions. It stores from -10°C to -25°C. For more information, visit Maine Standards Company.